James l



M, (No Model.)

J. L. CUTLER. I TELEGRAPH INSTRUMENT.

No. 606,449. Patented June 28,1898.

. u E 3 Z1\ I JAMES L. CUTLER, OF CINCINNATI,

PATENT .FFIC.

OHIO, ASSIGNOR OF ONE-HALF TO EDIVIN GOODER, OF SAME PLACE.

TELEGRAPH INSTRUMENT.

SPECIFICATION forming part of Letters Patent No. 606,449, dated June 28,1898.

Application filed October 18, 1897.

T0 at whom it may concern.-

Be it known that I, JAMES L. CUTLER, a citizen of the United States,residing at Cincinnati, in the county of Hamilton and State of Ohio,have invented certain new and usef ul Improvements in TelegraphInstruments; and I do declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, and to the figures of referencemarked thereon, which form a part of this specification.

This invention relates to certain improvements in magnetic telegraphinstruments and the like, and has for its object to provide aninstrument of a simpleand inexpensive character which shall be strongand durable and wherein the electromagnetic devices are so constructedand arranged as to permit of operating the instrument with a minimumexpenditure of electromotive force, so that an economy in the employmentof batteriesis permitted.

The invention consists in certain novel fea-' tures of the construction,combination, and arrangement of the various parts of the im provedinstrument whereby certain important advantages are attained and thedevice is made simpler, cheaper, and otherwise better adapted for use,all as will be hereinafter fully set forth.

The novel features of the invention will be carefully defined in theclaims.

In order that my invention may be the better understood, I have shown inthe accompanying drawings a telegraph sounder or receiver embodying myimprovements, in which drawingsc Figure 1 is a side view showing theimproved instrument. Fig. 2 is a plan View of the same, and Fig. 3 is afragmentary sectional view taken. in the plane indicated by the line a ain Fig. 1 and showing the arrangement of the trunnion-screws whereon thearmature-lever is pivotally mounted.

In the drawings, 1 indicates a base, usually made of wood and serving tointensify the sound of the instrument mounted thereon, said basecarrying binding-screws 2 2, from which lead wires (not shown) to theends of Serial No. 655,538. (No model.)

the magnet-coil, so that the instrument may be connected in thetelegraph or other circuit in the ordinary manner.

3 indicates a metal bed-plate or bridge secured to the upper face of thebase 1 by means of screws or the like and carrying the electro* magnet,which comprises a magnetcoil 4, wound on a core 5, to the lower end ofwhich is secured a transverse bar or yoke 6, of soft iron, held byscrews or otherwise to the flat top surface of the bridge 3 and havingits extremities 7 and '8 bent up at right angles and 011 opposite sidesof the magnet-coil, with their upper ends substantially in line with theupper end of the core 5.

' To the upper end of the arm or standard 7 of the bar or yoke 6 issecured, by means of screws or the like, a plate 9, the opposite sideportions 10 of which are bent at right angles, as shown in Fig. 2, so asto extend over the side surfaces of the said arm 7, and the up per endsof said side portions 10 are bent in opposite directions and extendedabove the upper end of said arm 7, so as to permit the armature-lever 11to be pivoted between them in position directly over and in line withthe upper ends of arms 7 and 8 and of the core 5 of the electromagnet.As shown in the drawings, the armature-lever 11 is pivotally mountedbetween trunnion-screws 12, having jam-nuts, in the usual way.

j Upon the upper end of the arm 8 of the bar or yoke 6 is also held, bymeans of screws or the like, a plate 13, having its upper end bent, asshown at 14, to form a stop to limit the movement of the armature-lever11, the free end of which vibrates'between the upper ex 'tremity of saidarm 8 and the said stop. The said bent end 14 of plate 13 carries anadjusting-screw 15, having a jam-nut, and the free end of armature-lever11 is also provided with an adj usting-screw 16, having a jam-nut andadapted for engagement with the upper extremity of the arm 8. By thisarrangement it will be seen that the vibratory movement of thearmature-lever may be conveniently and nicely adjusted.

The opposite end of the armature-lever 11 is made to project beyond thearm 7, at which it is pivoted, and is provided with an adjusting-screw18, having jam-nuts and connected at its lower end with a spiral spring17, the

too I lower end of which is connected to an arm 10, projecting from oneside of the bridge ii. The spring 17 serves to hold the armature-lever11. with its free end in raised position, as shown in Fig. 1, butpermits it to be moved toward the magnet when the same is energized, theextent of movement being regulated, as will be readily understood, bymeans of the screws 15 and 16, while the adjusting-screw 18 permits ofadjusting the tension of the spring to the required degree.

In operation, when the instrument is connected in the telegraph or othercircuit and said circuit is closed, the [low of the current through themagnet-coil at will serve to energize the magnet and cause the core 5 ofthe same to attract the armature-lever 11 and move the same in theordinary way. At the same time the bar 6, which, together with said core5, is made of soft iron and is connected with the lower end of saidcore, will act as the opposite pole of the magnet, and the arms orstandards 7 and S of said bar, being arranged on opposite sides of thecore 5 and in proximity to the armature-lever 11, will also attract thesaid lever, so as to move the same downward. \Vhen the circuit is openedor broken, the spring 17 will serve to raise the armature-lever, as willbe readily understood, the sounds produced by the movement of the levercorrespon ding with the dots and dashes of the telegraphic code andbeing intensified by the metal bridge 3 in a well-known way. By thisarrangement it will be seen that the upper end of the core 5 will assumean oppo' site polarity to that of the upper ends of the arms 7 and 8 ofthe bar 0, and said arms and core, being arranged in line with eachother and with the pivotal point of the armature lever 11, will serve toattract said lever much more strongly than is the case where thearmature is arranged in the ordinary manner, so that a considerableeconomy in battery power is permitted, it being possible to cmploy aweaker current in the local circuit.

From the above description it will be seen that the instrumentconstructed aceordin g to my invention is of an extremely simple andinexpensive nature and is especially well adapted for the purposes forwhich it is designed, and it will also be obvious that the device iscapable of considerable change without material departure from theprinciples and spirit of the invention, and for this reason I do notwish to be understood as limiting myself to the precise form andarrangement of the several parts herein set forth.

Having thus described my invention, I elaim- 1. In a telegraphinstrument or the like, a

magnet comprisin a core, a coil wonn d thereon and a soft-iron barconnected at its central part to one end of the core and having its endsbent to form arms extending along opposite sides of the coil with theirextremities adjacent to the free end of the core, in con1- bination withan armaturedevcr located in the field of the magnet pivoted on one ofthe arms and extending in line with the tree ends of the arms and core,substantially as set forth.

2. In a telegraph instrun'leut or the like, the combination of a core, acoil wound there on and a soft-iron bar connected at its central part toone end of the core and having its ends bent to form arms extendingalong opposite sides of the coil and having their extremities adjacentto the free end of the core, in combination with an armature-leverlocated in the field of the magnet and pivotally connected with one ofsaid arms in position to move in line with the other arm and the core,and stops on the last-mentioned arm to limit the movement of the armatnrc-lerer sn 1 stantially as set forth.

3. In a telegraph instrument or the like, the combination of a magnetcomprising a core, a coil thereon and a bar connected at its centralpart to one end of the core and having its ends bent to form armsextending along opposite sides of the coil with theirextrcmitiesadjacent to the free end of the core, a plate carried by one arm, anarmature-lever pivotally connected to said plate, a plate carried by theother arm and forming a stop to limit the movement of thearmattire-lever, and a spring to hold said lever in its normal position,substantially as set forth.

4-. In a telegraph-sounder, the combination of a magnet comprising acore, a coil wound thereon and a soi'tdron bar connected at its centralpart to one end of the core and having its ends bent to form armsextending along opposite sides of the coil with their extremitiesadjacent to the free end of the core, a plate secured to one side of onearm and having upwardly-proj ectin g side portions, an armature-leverpivoted between said side portions and arranged to move in line with theupper ends of the arms and core, stops carried by the other arm to limitthe movement of tho armature-lever, and a retracting-spring [or thearmature-lever, substantially as set forth.

In testimony whereof I ailix my signature in presence of two witnesses.

JAMES L. OllTLltlt.

Witnesses:

Jenn Ennis Jones, L. M. Jones.

